2007 Jetta alarm

I have a 2007 VW Jetta and the alarm keeps going off at random. This has been going on for a while, first the dealership thought it was a door sensor, then a window switch. they told us to either disconnect the battery when we park the car or to leave it unlocked. Since I used to live in an area that was fairly safe I would leave the car unlocked, but soon I would come out in the morning to a dead battery. I was then told that if you don’t lock the car (like VW suggested) the car doesn’t fully shot down and drains the battery. Sounds pretty insane to me, but probably unrelated to the alarm. Any ideas what might be causing the alarm to go off at all hours? Our neighbors are starting to hate us…

Keep going back to the dealer until the warranty expires. They should FIX it, not tell you to leave the car unlocked. That’s really pitiful advice from a dealer.

You might try a different VW dealer.